diff --git a/backend/src/main/java/com/mapbefine/mapbefine/auth/application/TokenService.java b/backend/src/main/java/com/mapbefine/mapbefine/auth/application/TokenService.java
index 3344a6f9..0fb0bd0b 100644
--- a/backend/src/main/java/com/mapbefine/mapbefine/auth/application/TokenService.java
+++ b/backend/src/main/java/com/mapbefine/mapbefine/auth/application/TokenService.java
@@ -26,8 +26,9 @@ public LoginTokens issueTokens(Long memberId) {
         String accessToken = tokenProvider.createAccessToken(String.valueOf(memberId));
         String refreshToken = tokenProvider.createRefreshToken();
 
-        refreshTokenRepository.findByMemberId(memberId)
-                .ifPresent(refreshTokenRepository::delete);
+        if (refreshTokenRepository.existsByMemberId(memberId)) {
+            refreshTokenRepository.deleteByMemberId(memberId);
+        }
 
         refreshTokenRepository.save(new RefreshToken(refreshToken, memberId));
 
@@ -58,5 +59,4 @@ public void removeRefreshToken(String refreshToken, String accessToken) {
     }
 
 
-
 }
diff --git a/backend/src/main/java/com/mapbefine/mapbefine/auth/domain/token/RefreshTokenRepository.java b/backend/src/main/java/com/mapbefine/mapbefine/auth/domain/token/RefreshTokenRepository.java
index 8fab5056..75838b30 100644
--- a/backend/src/main/java/com/mapbefine/mapbefine/auth/domain/token/RefreshTokenRepository.java
+++ b/backend/src/main/java/com/mapbefine/mapbefine/auth/domain/token/RefreshTokenRepository.java
@@ -1,11 +1,10 @@
 package com.mapbefine.mapbefine.auth.domain.token;
 
-import java.util.Optional;
 import org.springframework.data.jpa.repository.JpaRepository;
 
 public interface RefreshTokenRepository extends JpaRepository<RefreshToken, String> {
 
-    Optional<RefreshToken> findByMemberId(Long memberId);
+    boolean existsByMemberId(Long memberId);
 
     void deleteByMemberId(Long memberId);
 
diff --git a/backend/src/main/java/com/mapbefine/mapbefine/auth/infrastructure/JwtTokenProvider.java b/backend/src/main/java/com/mapbefine/mapbefine/auth/infrastructure/JwtTokenProvider.java
index 2e11a2eb..f3ec2a3e 100644
--- a/backend/src/main/java/com/mapbefine/mapbefine/auth/infrastructure/JwtTokenProvider.java
+++ b/backend/src/main/java/com/mapbefine/mapbefine/auth/infrastructure/JwtTokenProvider.java
@@ -11,14 +11,13 @@
 import io.jsonwebtoken.Jwts;
 import io.jsonwebtoken.SignatureAlgorithm;
 import java.util.Date;
+import java.util.UUID;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.stereotype.Component;
 
 @Component
 public class JwtTokenProvider implements TokenProvider {
 
-    private static final String EMPTY = "";
-
     private final String secretKey;
     private final long accessExpirationTime;
     private final long refreshExpirationTime;
@@ -41,7 +40,9 @@ public String createAccessToken(String payload) {
     }
 
     public String createRefreshToken() {
-        return createToken(EMPTY, refreshExpirationTime);
+        UUID payload = UUID.randomUUID();
+
+        return createToken(payload.toString(), refreshExpirationTime);
     }
 
     private String createToken(String payload, Long validityInMilliseconds) {
diff --git a/backend/src/main/java/com/mapbefine/mapbefine/auth/presentation/LoginController.java b/backend/src/main/java/com/mapbefine/mapbefine/auth/presentation/LoginController.java
index b7ca5d0b..58a608e4 100644
--- a/backend/src/main/java/com/mapbefine/mapbefine/auth/presentation/LoginController.java
+++ b/backend/src/main/java/com/mapbefine/mapbefine/auth/presentation/LoginController.java
@@ -64,7 +64,7 @@ private ResponseCookie createCookie(String refreshToken) {
         return ResponseCookie.from("refresh-token", refreshToken)
                 .httpOnly(true)
                 .maxAge(TWO_WEEKS)
-                .sameSite("Lax")
+                .sameSite("None")
                 .secure(true)
                 .path("/")
                 .build();
diff --git a/backend/src/main/java/com/mapbefine/mapbefine/common/config/WebConfig.java b/backend/src/main/java/com/mapbefine/mapbefine/common/config/WebConfig.java
index 2af70d48..6cfddd36 100644
--- a/backend/src/main/java/com/mapbefine/mapbefine/common/config/WebConfig.java
+++ b/backend/src/main/java/com/mapbefine/mapbefine/common/config/WebConfig.java
@@ -1,5 +1,6 @@
 package com.mapbefine.mapbefine.common.config;
 
+import static org.springframework.http.HttpHeaders.COOKIE;
 import static org.springframework.http.HttpHeaders.LOCATION;
 import static org.springframework.http.HttpHeaders.SET_COOKIE;
 
@@ -16,7 +17,7 @@ public class WebConfig implements WebMvcConfigurer {
     public void addCorsMappings(CorsRegistry registry) {
         registry.addMapping("/**")
                 .allowedOrigins("http://localhost:3000", "https://mapbefine.kro.kr", "https://mapbefine.com")
-                .allowedHeaders("refresh-token")
+                .allowedHeaders(COOKIE)
                 .allowedMethods("*")
                 .allowCredentials(true)
                 .exposedHeaders(LOCATION, SET_COOKIE);